• Dimension One Spas: This is a major user of the part (often listed under their internal SKU 01510-961), particularly for their @Home series fountain and flow controls.
• Dynasty Spas: Frequently uses this part for their "Deluxe 180-degree shut-off" valves, cross-referenced with their part number 15365 or 15063.
• Cal Spas: Utilizes this stem in various waterfall and on/off valve assemblies.
• Master Spas: Incorporates this component across several lines; they may use internal part number X804184 for a clear version of the same stem.
• Hydropool: Uses this internal part, often cataloged under their specific number 27-270-2759.
• Artesian Spas: Included in their standard plumbing for diverter and shut-off configurations.
• Beachcomber Spas: Found in models utilizing Waterway top-access valve hardware.
• Coast Spas: Uses the 602-0420 stem in specific configurations of their water feature valves. 
   

The 602-0420 valve, also known as the Waterway Overmolded Diverter Seal, is used in Waterway Top Access 100% shut-off valves, which are typically 3/4" and 1" in size. This valve provides a secure seal that protects your water system from leakage and other damage. It is commonly used in pools, hot tubs, and similar water systems. The valve is designed to completely shut off the flow of water when needed, hence the term “100% shut-off valve”. The part comes in black with a square top part to fit into the handle. It’s an internal part of the diverter valves that provide 100% shutoff.

On/Off Valve, WW, 3/4"s x 3/4"s, "S", 100% Shut Off, Dk Slvr/Blk

Discontinued by manufacturer

Manufacturer: Waterway Plastics

Manufacturer #: 600-3309DSG-1

Replaces: _600-3309DSG-1 , 320128